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91341128 = 233121092
BaseRepresentation
bin1010111000111…
…00000101001000
320100212121110202
411130130011020
5141340404003
613021431332
72156246444
oct534340510
9210777422
1091341128
1147617a3a
122670b548
1315c01508
14c1b9824
158044088
hex571c148

91341128 has 36 divisors (see below), whose sum is σ = 178605945. Its totient is φ = 43791840.

The previous prime is 91341127. The next prime is 91341161. The reversal of 91341128 is 82114319.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 87647044 + 3694084 = 9362^2 + 1922^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=6758.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91341128.

It is not an unprimeable number, because it can be changed into a prime (91341127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 837938 + ... + 838046.

Almost surely, 291341128 is an apocalyptic number.

It is an amenable number.

91341128 is a deficient number, since it is larger than the sum of its proper divisors (87264817).

91341128 is a wasteful number, since it uses less digits than its factorization.

91341128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 142 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 91341128 is about 9557.2552545174. The cubic root of 91341128 is about 450.3554853593.

The spelling of 91341128 in words is "ninety-one million, three hundred forty-one thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 31 62 109 124 218 248 436 872 961 1922 3379 3844 6758 7688 11881 13516 23762 27032 47524 95048 104749 209498 368311 418996 736622 837992 1473244 2946488 11417641 22835282 45670564 91341128